Compound index

Peptide Library

Clear starting points for understanding what a compound is, what people report, what evidence exists, and what remains unknown.

Living index: This starter directory does not claim to include every peptide in circulation. Regulatory status and evidence evolve. Request a compound or correction.

Investigational / not FDA-approved

AOD-9604

Modified fragment of human growth hormone studied in relation to fat metabolism.

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Investigational / not FDA-approved

BPC-157

Synthetic peptide modeled on a fragment associated with gastric proteins.

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FDA-approved medicine for a specific indication

Bremelanotide (PT-141)

Melanocortin receptor agonist.

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Investigational / not FDA-approved

CJC-1295

Long-acting growth-hormone-releasing hormone analog studied for effects on growth hormone signaling.

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Investigational / not FDA-approved

Epitalon

Synthetic tetrapeptide promoted in longevity communities.

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No FDA-approved systemic drug for promoted uses

GHK-Cu

Naturally occurring copper-binding tripeptide studied in skin and tissue biology.

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Investigational / not FDA-approved

Ipamorelin

Growth hormone secretagogue that acts at the ghrelin receptor.

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Investigational / not FDA-approved

KPV

Short tripeptide fragment related to alpha-melanocyte-stimulating hormone research.

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FDA-approved medicines exist for specific indications

Liraglutide

GLP-1 receptor agonist peptide medicine.

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Investigational / not FDA-approved

LL-37

Human antimicrobial peptide involved in innate immune responses.

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Unapproved / not FDA-approved

Melanotan II

Synthetic melanocortin analog promoted online for tanning and other effects.

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Investigational / not FDA-approved

MOTS-c

Mitochondrial-derived peptide studied in metabolic signaling and aging biology.

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FDA-approved medicines exist for specific indications

Semaglutide

GLP-1 receptor agonist peptide medicine.

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Investigational / not FDA-approved

TB-500 / thymosin-related fragments

Names used online for synthetic products associated with thymosin beta-4 research.

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FDA-approved medicine for a specific indication

Tesamorelin

Synthetic analog of growth-hormone-releasing factor.

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FDA-approved medicines exist for specific indications

Tirzepatide

Dual GIP and GLP-1 receptor agonist peptide medicine.

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